 
public class Student {
    // 学号
    private String sid;
    // 姓名
    private String name;
    // 年龄
    private String age;
    // 居住地
    private String address;
 
    // 无参构造方法
    public Student(){
 
    }
    // 有参构造方法
    public Student(String sid , String name , String age, String address){
        this.sid = sid;
        this.name = name;
        this.age = age;
        this.address = address;
    }
 
    public String getSid() {
        return sid;
    }
 
    public void setSid(String sid) {
        this.sid = sid;
    }
 
    public String getName() {
        return name;
    }
 
    public void setName(String name) {
        this.name = name;
    }
 
    public String getAge() {
        return age;
    }
 
    public void setAge(String age) {
        this.age = age;
    }
 
    public String getAddress() {
        return address;
    }
 
    public void setAddress(String address) {
        this.address = address;
    }
}